Zanatta, D.T., A. Ngo & J. Lindell. 2007. Reassessment of the phylogenetic relationships among Anodonta, Pyganodon, and Utterbackia (Bivalva: Unionoida) using mutation coding of allozyme data. Proceedings of the Academy of Natural Sciences of Philadelphia 156: 211-216. Available electronically.
(click the figure number to see the cladogram)
+-- Platynaias_compressa
|
+-----------------+-- Lasmigona_costata
| |
| +-- Pterosyna_complanata
|
--+ +----------------- Anodonta_cygnea
| |
| | +----------- Brachyanodon_kennerlyi
| | +--+
+--+ | | +-------- Utterbackiana_implicata
| | +--+
| | | +----- Utterbackiana_suborbiculata
| | +--+
| | | +-- Utterbackiana_heardi
+--+ +--+
| +-- Utterbackiana_couperiana
|
| +-- Utterbackia_peggyae
| +--+
| | +-- Utterbackia_imbecillis
| |
+--------+ +-- Pyganodon_gibbosa
| |
| +-- Pyganodon_cataracta
| |
+--+-- Pyganodon_fragilis
|
+-- Pyganodon_grandis
|
+-- Pyganodon_lacustris
+-- Lasmigona_costata
|
+-----------------+-- Platynaias_compressa
| |
| +-- Pterosyna_complanata
|
| +-------------- Anodonta_cygnea
| +--+
--+ | | +----------- Brachyanodon_kennerlyi
| | +--+
| | | +-------- Utterbackiana_implicata
| | +--+
| | | +----- Utterbackiana_heardi
| | +--+
+--+ | +-- Utterbackiana_suborbiculata
| +--+
| +-- Utterbackiana_couperiana
|
| +-- Utterbackia_peggyae
| +-----------+
| | +-- Utterbackia_imbecillis
+--+
| +----------- Pyganodon_lacustris
+--+
| +-------- Pyganodon_grandis
+--+
| +----- Pyganodon_fragilis
+--+
| +-- Pyganodon_gibbosa
+--+
+-- Pyganodon_cataracta